When dividing with decimals why is it necessary to multiply both the divisor and the divedend by the same power of 10

To make it a whole number, we will multiply both the dividend and the divisor by 1,000. Multiply the divisor by a power of 10 to make it a whole number. Multiply the dividend by the same power of 10. Place the decimal point in the quotient.

"a" determine whether sage found the correct quotient. show your work

step-by-step explanation:

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0